How does the Galaxy Watch compare to Wear OS watches?

If you own an Android phone and want a new smartwatch, one of your best options is easily the Samsung Galaxy Watch.

The Galaxy Watch brings a lot to the table, with some of the highlights being a great design, rotating bezel for UI navigation, Samsung Pay, multi-day battery life, and more. All of that's fine and dandy, but if you're coming from a Wear OS / Android Wear device, how does it compare?